baber/WOPTO huggingface dataset:
Patent GB-754340-A (GB)
Title: Machine for forming an abrading surface on the peripheral surface of a wheel
IPC: B23D73/00
Filed: 1954-02-04
Abstract: 754,340. Serrating wheels by chisel cuts. MERCHANT, C. O. Feb. 4, 1954, No. 3363/54. Class 83 (4). A machine for forming an abrading surface on the periphery of a metal wheel, particularly for use in a cigarette lighter, comprises a conveying device 75 for conveying the wheels intermittently beneath a rotating member 69, Fig. 1, a lifting member 107 for raising each wheel from the conveying device and into engagement with the rotating member, rapidly reciprocating opposed die or cutter members 190, 191, Fig. 4, disposed transversely of the conveying mechanism for impressing spaced diagonal grooves on the periphery of the wheel during its rotation, and power means for driving the rotatable member, the lifting mechanism and the die members. The wheel blanks are fed from a hopper along a track 76, Fig. 1, and are moved along the track by a sprocket wheel 182 rotated intermittently by a cam 18 through a ratchet mechanism. The cam 18 is mounted on a main shaft 10 driven through a gear-box 5 by an electric motor 2. The rotating member 69 is driven continuously through gears 44, 42, Fig. 3, in a gear-box 40, and a vertical shaft 33 carrying a spiral gear 32 in mesh with a gear 29 on a shaft 24 driven through gears 23, 22, Fig. 1, from the main shaft 10. When a wheel is aligned with the rotary member 69 a freelyrotatable nose 107 on a lifting member 80 actuated by a cam 19, raises the wheel into engagement with the rotating member 69 which has radial cleats 73, Fig. 10a (not shown), on its lower surface to assist in gripping the wheel. A pair of opposed cutting dies 191 are secured in chucks 150 carried by spring-loaded reciprocating sliders 139 having followers 137 in engagement with multi-lobed cams 135 mounted on shafts 133. The latter are driven through bevel gearing 125, 126, Fig. 1, from a shaft 116 carrying a gear 117 which meshes with a driving gear 792 on the shaft 10 for three-fifths of a revolution thereof. During this time, which is synchronized with the rotation of the wheel by the member 69, the dies 191 are reciprocated to produce diagonal chisel cuts on the periphery of the wheel. For the remaining two-fifths of a revolution of the shaft 10, the gear 117 is held out of mesh with the gear 792 by co-operating cams 793, 115. After this cutting operation, the wheels are conveyed along the track by a pawl 204, connected to a rod 200 driven through linkage by the cam 18, to a second rotating member 70, driven in an identical manner to the member 69. A second lifting nose 107 raises the wheel against the member 70 and a second pair of opposed cutting dies 190, Fig. 4, are reciprocated to produce further diagonal cuts on the periphery of the wheel, which cuts are of opposite slope to the first cuts whereby the resulting peripheral surface of the wheel is cross-hatched, Fig. 8 (not shown). The cutting dies 190, 191 are adjustably mounted in their chucks 150 whereby the depth of cut may be varied.
Patent GB-247212-A (GB)
Title: Improvements in cash drawer control mechanism for cash registers
IPC: G07G1/00
Filed: 1925-01-17
Abstract: 247,212. National Cash Register Co., (Assignees of Shipley, B. M.). Jan. 19, 1924,. [Convention date]. Cash drawer mechanism.-The drawer is released during each single-item transaction and during the taking of the total in a multiple-item transaction, but not during the multiple-item entering operations. The drawer bolt 507 is withdrawn whenever a plate 521, slidably mounted on a lever 512 loose on shaft 516 and pin-and-slot connected to the bolt, is shifted towards the shaft, for this causes through engagement of an edge 529 with a nose 522 of a lever 527 pinned to the shaft, a sufficient clockwise displacement to bring an arm 524 within the path of an operating pin 525 mounted on the main shaft. The plate 521 is shifted by means of a link 540 actuated through shaft 543 and pin 546 by a cam slot in a slide positioned by the differential mechanism of the transaction bank. In total-taking the rocking of shaft 268, Fig. 2, effected mechanically at the end of the first cycle of operation causes, through link 552 and the other mechanism shown, clockwise movement of shaft 537 and therefore the advance of plate 521 and the release of the drawer during the second cycle. A spring-controlled bell-crank lever 563, pressed against the drawer serves to prevent the restoration of the total-lever to adding-position, the link 552 having for this purpose a lug 561 which by the manual movement of the total-lever is carried to the left of the extremity 562 of the bell-crank lever.
Patent GB-229289-A (GB)
Title: Improvements in and relating to apparatus for the manufacture of hollow bodies from fibrous pulp
IPC: D21J5/00
Filed: 1925-02-06
Abstract: 229,289. Baumgõrtner Dr. Katz & Co. Ges. Feb. 13, 1924, [Convention date]. Moulding pulp.-In the moulding of hollow articles from fibrous pulp within hinged, pervious moulds by means of a heated gaseous medium, the upper part of the mould is impermeable, e.g. a removable impervious wall is placed over the upper edges of the article to be moulded. As shown, the mould c is formed with pervious walls and is furnished with a removable impervious wall b adapted to engage the head d connected to the supply pipe a for the pressure medium. The wall b determines the height of the vessel produced. Rabbeted vessels may be produced by means of an auxiliary frame f furnished with a pervious wall e.
Patent GB-187534-A (GB)
Title: Improvements in and relating to baskets
IPC: B65D6/08
Filed: 1922-02-06
Abstract: 187,534. Walden, A. Feb. 6, 1922. Baskets.-A letter tray or other basket has a flat bottom of wood, cardboard, fibre, or metal secured in position by the basket-work which extends through perforations around the edge of the bottom. In making the basket the bottom a is placed on a block c with its perforations registering with holes d in the block, and withies ware placed in the holes. The basket is then woven on the upper ends of the withies as shown. The block c which has tapered sides is then inverted and the basket is inverted upon it to enable the ends of the withies to be woven together to secure the bottom in position.
Patent GB-765389-A (GB)
Title: Water level controlling apparatus for steam generators
Inventor: WILSON STEWART
IPC: F22D5/08
Filed: 1955-02-05
Abstract: 765,389. Fluid-pressure servomotor control systems. STEPHEN & SONS, Ltd., A. Feb. 5, 1955, No. 3491/55. Addition to 736,363. Class 135. A modification of water level controlling apparatus for steam generators as claimed in Claim 1 of the parent Specification consists in connecting the float chamber 1 to the boiler by a pipe 3 opening into the float chamber at a predetermined high water danger level and into the steam space of a boiler above said danger level, and connecting the lower part of the float chamber by a pipe 5 to the lower region of the water space. At normal water level steam passes through the pipe 3 and condenses in the chamber 1. On the level rising and closing pipe 3 the steam in chamber 1 condenses and water fills the chamber 1 and lifts the float 8 to operate the lever 12 and open valve 11 so that water flows through the pipe 22 to close a boiler feed valve. Should the level go below a low water danger level the pipe 28 connected to the water space of the boiler has its end in the chamber 1 open. Normally hot water flows through the pipe 28 into the chamber and sinks through the pipe 5. With the pipe 28 uncovered the cool column of water quickly sinks down the pipe 5 so that the float 8 is lowered and its full weight acts on the lever 15 and opens the valve 14 so that the steam flows through the pipe 29 to close a burner fuel valve. Instead of the high and low level control being effected by a single float chamber, each may be controlled by a separate float chamber. The float may be counterbalanced by a weighted lever system instead of a weighted pulley system 9, the float chamber being raised so that the float is only actuated as the level approaches the high water level or the chamber is lowered so that the float is immersed and abutting a stop at normal level but falls to actuate the control valve when the level opens the pipe 28. In a further embodiment for high water level control the pipes 3, 4 enter at the side of the float chamber and the float operates the control valve situated at the top of the float chamber through a compound level system. The pipes 20, 28 are adjustable for different levels by screwing them through the ends of the float chamber.
Patent GB-646079-A (GB)
Title: Improvements in or relating to adhesive compositions
IPC: C09J121/00
Filed: 1948-02-06
Abstract: A method of preparing an adhesive, e.g. for attaching rubber soles to fabric uppers, comprises the preparation of two compositions which are subsequently mixed, one of which comprises a natural or synthetic rubber such as polychloroprene or a copolymer of butadiene with acrylonitrile or styrene dissolved in an organic solvent, and the other of which comprises isobutylene dissolved in an organic solvent and at least one vulcanizing ingredient insoluble in the solvent.  In examples (A)-(F), a mix consisting of zinc oxide, stearic acid, agerite white, sulphur, zinc isopropylxanthate, butyl 8, and polyisobutylene dispersed in petroleum spirit or trichlorethylene is used in conjunction with natural rubber dissolved in trichlorethylene, with butadiene-styrene copolymer dissolved in petroleum spirit or with butadiene - acrylonitrile dissolved in ethyl acetate.  In examples (G) and (H), zinc oxide, catechol, salicylic acid and polyisobutylene are dispersed in trichlorethylene and used in conjunction with neoprene dissolved in toluene.  The proportion of isobutylene is preferably so arranged that the viscosity of the mixture is not less than 200 centipoises in trichlorethylene and not less than 400 centipoises in petroleum spirit in order to counteract the tendency for insoluble matter to settle out.ALSO:A multi-part method of preparing a rubber adhesive comprises the preparation of two compositions which are subsequently mixed, one of which comprises a rubber dissolved in an organic solvent, and the other of which comprises isobutylene dissolved in an organic solvent and at least one vulcanizing ingredient for the rubber, which ingredient is substantially insoluble in the solvent last referred to.  The rubber may be natural rubber or a vulcanizable synthetic rubber such as a polychloroprene, or a copolymer of butadiene with acrylonitrile or styrene.  In examples (A)-(F), a mix consisting of zinc oxide, stearic acid, agerite white, sulphur, zinc isopropylxanthate, butyl 8, and polyisobutylene dispersed in petroleum spirit or trichlorethylene is used in conjunction with natural rubber dissolved in trichlorethylene, with butadiene-styrene copolymer dissolved in petroleum spirit or with butadiene-acrylonitrile dissolved in ethyl acetate.  In examples (G) and (H) zinc oxide, catechol, salicylic acid and polyisobutylene were dispersed in trichlorethylene and this mix used in conjunction with neoprene dissolved in toluene.  The proportion of isobutylene is preferably so arranged that the viscosity of the mixture is not less than 200 centipoises in trichlorethylene and not less than 400 centipoises in petroleum spirit in order to counteract the tendency for insoluble matter to settle out.
Patent GB-651736-A (GB)
Title: Improvements in cartridge shells for shot guns
IPC: F42B7/04
Filed: 1948-02-06
Abstract: 651,736. Shot-gun cartridges. BOUCAYRAND, R. Feb. 6, 1948, No. 3525. Convention date, April 21, 1947. [Class 9 (i)] The forward end of a cartridge case A is recessed to cause the case to be reversed during flight and thereby effect ejection of the shot. The recess may be formed by using a concave cap B of hemi-spherical or conical form. Otherwise a flat disc set back from the forward end of the case may be used. Apertures E may be provided in the cap. The case may have longitudinal ribs D and lateral apertures C may be provided to increase the damping effect of the recess. The case A and the end cap may be of light-weight alloy, thermoplastic material, cardboard or cork composition.
Patent GB-1532764-A (GB)
Title: Master slave flip-flop circuit
IPC: H03K3/286
Filed: 1977-01-28
Abstract: 1532764 Master-slave flip-flop SONY CORP 28 Jan 1977 [30 Jan 1976] 03559/77 Heading H3T A master-slave flip-flop of a known type 1,2,4,6, 8 has an extra gate 13 connected from the output of the slave 4 to an input of the master I and operation of the gate either adds or suppresses a transition so that the output waveform from the slave is for the instant not at half the frequency of the input. This allows the output waveform to be shifted in time by an amount equal to the period of the input waveform. The circuit is used in PAL television systems. Preferably the control input I f  is connected to an integrator 14, 15 to cut noise and this integrator is discharged by the control transition via transistor 16. An integrated circuit embodiment is given (Fig. 7, not shown) applied to the master-slave circuit of 1,461,443.
Patent GB-874878-A (GB)
Title: Improvements in or relating to television and like camera tubes
Inventor: CALLICK ERIC BRIAN BUTLER
IPC: H01J31/48
Filed: 1959-02-02
Abstract: 874,878. Cathode-ray tubes. ENGLISH ELECTRIC VALVE CO. Ltd. Nov. 23, 1959 [Feb. 2, 1959], No. 3661/59. Class 39(1). A television camera tube has a fine mesh electrode 3 with a photo-emissive or photoconductive layer 4 receiving an optical image, a scanning gun 8 on the side of layer 4, which lays down a negative charge image an output electrode or multiplier 9, 10 to receive electrons passing through the mesh -electrode 3 under control of the charge image thereon a grid 7 which draws electrons through mesh 3 and a grid 6 for collecting electrons, reflected by the photo-conductive or photo-emissive layer 4. To put the tube into operation mesh 3 is given a potential of 10 volts positive and is scanned by the gun 8 to bring all the. areas of the photo-sensitive layer 4 to .cathode potential. Mesh 3 is now given earth potential so that all areas of 4 are driven 10 volts negative. This procedure is preferably done by applying a pulsed waveform to mesh 3. Grid 7 is . positive to grid 6. Coil 12 reverses the scan of coil 11.
Patent GB-1017784-A (GB)
Title: Improvements relating to a poppet valve for an internal combustion engine
IPC: F01L3/10
Filed: 1964-01-28
Abstract: 1,017,784. I.C. engine valves. REGIE NATIONALE DES USINES RENAULT. Jan. 28, 1964 [Jan 30, 1963; Oct. 28, 1963], No. 3673/64. Heading FIB. In an I.C. engine poppet valve having a valve cotter groove 3 and a stem portion 4 in the region of the groove between the groove and the valve head, the stem portion 4 is of a diameter which is less than the normal diameter of the stem 2 and is substantially longer than groove 3 to impart elasticity to the valve stem thereby avoiding fractures across groove 3. In a modification the groove 4 is of frustoconical shape.
Patent GB-1130208-A (GB)
Title: Improvements in and relating to disc brakes
IPC: C10L3/02
Filed: 1966-01-27
Abstract: 1,130,208. Disc brakes. SOC. ANON. FRANCAISE DU FERODO. 27 Jan., 1966 [1 Feb., 1965], No. 3752/66. Heading F2E. In a disc brake of the kind having a floating yoke surrounding both a fixed frame 11, in apertures 13 of which pads 14, 14A are guided, and a peripheral portion of a disc 10 engaged by the pads on supply of fluid to a cylinder 23 formed in the yoke, the yoke consists of four separate elements, viz: thrust and reaction elements 19, 20, and connecting elements 21, the elements being connected together by pins 22 held in place by split-pins 30, whereby dismantling and assembly are facilitated. In the embodiment of Fig. 1, the reaction member is arranged at each end with a clearance J between frame members 12 but cannot move circumferentially when assembled with pad 14A since lugs 28 of the reaction member fit in opposed cut-out portions 18 in the four corners of the pad backing-plate. The thrust member is also held against circumferential movement, by engagement of an extension of the piston 24 in an aperture in the backing plate of pad 14. Figs. 6 and 7 (not shown) disclose alternative arrangements in which the clearances J are replaced, respectively, by clearances (J<SP>1</SP>) between the lugs 28 and the cut-out portions 18, and by clearances (J<SP>11</SP>) between the edges of the pad 14A and the frame members 12. In a second embodiment (Figs. 8-10, not shown) a comparatively large clearance (G) is provided at each end of the pad (14A) which allows the drag force acting on this pad to move the reaction member circumferentially relative to the thrust member, causing deformation of the rectangular parallelogram formed by the pivots (22), whereby a moderate self-servo effect is achieved, the principal effect of which is said to be a substantial reduction in fluid displacement required to operate the brake. Return springs (32) centralize the pad (14A) and the reaction member on brake release.
Patent GB-875363-A (GB)
Title: Gasolines containing combustion chamber deposit modifiers
IPC: C10L1/30
Filed: 1959-02-03
Abstract: A gasoline composition contains 2.0 to 4.6 c.c. per U.S. gallon of a tetraalkyl lead compound, 0.8 to 3.0 theories of a halohydrocarbon, and 0.05 to 1.0 theory of tri-(C8-oxo) phosphate or tri-(C8-oxo) phosphite.  The phosphate and phosphite are compounds obtained by reacting phosphorus oxy-halide or phosphorus halide with mixed octyl alcohols obtained by the "oxo" process.  In examples gasoline contains tetraethyl lead, ethylene dichloride and ethylene dibromide and the tri-(C8-oxo) phosphate and phosphite.  Other phosphorus esters are mentioned in comparison.
Patent GB-690894-A (GB)
Title: Improvements in or relating to thermo couples for use in temperature measurement
Inventor: PHIPPS GEORGE ALFRED
IPC: G01K1/14
Filed: 1951-02-16
Abstract: 690,894. Thermocouples. GUEST, KEEN & NETTLEFOLDS (CWMBRAN), Ltd. Feb. 13, 1952 [Feb. 16, 1951], No. 3775/51. Class 53. A thermocouple for temperature measurement in a furnace has its hot junction 16 embedded in a brick 12 forming part of the furnace wall. The junction is near the surface of the brick and the dissimilar metals 13, 14 forming the elements of the thermocouple are embedded in the fireclay of the brick before firing and emerge from the face of the brick opposite to that containing the hot junction. If the firing temperature of the brick is above that to. which the elements 13, 14 can be subjected without damage the brick may be provided with passages by means of rods or cores corresponding to the position of the elements and hot junction the rods being removed after firing and replaced by the elements which are secured in positon by a refractory cement.
Patent GB-348635-A (GB)
Title: Improvements in or relating to optical projecting apparatus
IPC: G03B21/30
Filed: 1930-02-04
Abstract: 348,635. Portable projectors. CIGARINI, A., 34, Harrington Road, South Kensington, and MAINA, J., 8, Grosvenor Gardens, both in London. Feb. 4, 1930, No. 3822. [Class 97 (i).] The projection apparatus is brought onto correct projecting position on being withdrawn from the casing, and a mirror is also automatically set for reflecting the projecting beam into a screen mounted on a side panel of the casing. In the construction illustrated the withdrawal of the projector 2 from the casing 1 swings a hinged mirror 10 by means of the catch 17 and pivoted arms 14, 15, 16, for projection on the screen 7. A closing panel 5, slidably or otherwise fitted and with an aperture 6, is used to close the casing after withdrawing the projector. Spools 13 are stored in compartments 12 of a drawer or container 11 fitted in the casing. Alternative arrangements are described in connection with the mirror and screen, including arrangements for a vertical projection from the projector.
Patent GB-253828-A (GB)
Title: Improvements in sleeve valve operating mechanism for internal combustion engines
IPC: F01L5/10
Filed: 1926-02-11
Abstract: 253,828. Fairweather, W. C., (Continental Motors Corporation). Feb. 11, 1926. Valve gear. - A sleeve valve 18 receives combined reciprocatory and oscillatory motion from a lever 43 pivoted at 44 and connected by an arm 40 to an inclined or wobble crank 36 formed on a shaft 25. Spherical joints are provided at 42 and 44, and at its end 46 the lever 43 slides through a spherical member 47 mounted in a socket 48 on the valve. In multi-cylinder engines, inclined cranks 36 are arranged on the shaft 25 in positions alongside the several cylinders and so as to correspond to the requisite order of firing. Reference has been directed by the Comptroller to Specifications 264.132 and 277,035.
Patent GB-490228-A (GB)
Title: Improvements in or relating to the manufacture of formamide
IPC: C07C233/01
Filed: 1937-02-10
Abstract: Formamide is prepared by reacting an alkyl formate with ammonia in a non-aqueous medium consisting of formamide and one or more aliphatic alcohols at atmospheric pressure, and preferably at a low temperature, i.e. 10-60 DEG  C.  The reaction products are preferably allowed to stand and the formamide then separated by distillation. In an example, a glass column, containing an equimolecular mixture of formamide and methyl alcohol, is kept at a temperature of 10-20 DEG C. while gaseous ammonia and methyl formate are introduced at the base.  The reaction products overflow at the top and are collected. Specification 476,942 is referred to.
Patent GB-1200975-A (GB)
Title: Semiconductor devices
IPC: H01L29/74
Filed: 1968-01-25
Abstract: 1,200,975. Semi-conductor devices. SIEMENS A.G. 25 Jan., 1968 [25 Jan., 1967], No. 4051/68. Heading H1K. A semi-conductor device, such as a thyristor, having incorporated in its semi-conductor body a substance forming recombination centres to reduce the recovery period after quenching, where the solubility of the substance in the semi-conductor material decreases with decreasing temperature, has an oxygen content of less than 10<SP>16</SP> atoms/c.c. in the crystal structure of the body and a mean dislocation density over a plane parallel to the main faces of the wafer in the unmodified part of the crystal of less than 1000/cm<SP>2</SP>. The local density of such dislocations measured over a square of side equal to the thickness of the body on such a plane is everywhere less than 10,000/cm<SP>2</SP>. Uniform and reliable parameter values,are then obtained. In devices where the area of the plane parallel to the main faces of the body in the unmodified part of the crystal is greater than 8 cm<SP>2</SP>. the dislocation density needs only to be less than 20,000/cm<SP>2</SP>. and the local density related to a square of side equal to the thickness of the body, on such a plane, needs only to be less than 50,000/cm<SP>2</SP>.
Patent GB-867130-A (GB)
Title: Improvements relating to electric hand lamps
IPC: F21L4/00
Filed: 1959-02-05
Abstract: 867,130. Electric battery lamps; MAK, J. Jan. 25, 1960 [Feb. 5, 1959], No. 4068/59. Class 39(2). An electric hand lamp comprises a battery casing 10 having a hinged lid 11 on which a reflector head 23 containing a bulb 25 is mounted, an arm 28. pivoted to the lid for movement in a vertical plane and carrying at the end remote from the pivot a coloured, e.g. red, translucent cover 31 containing a second bulb 29 and switch means 20, 30 whereby the bulbs 25, 29 respectively may be controlled. The casing may contain a battery made up of four cells 17 in series. A carrying handle 27 may be mounted on the lid 11. The arm 28 may consist of two parallel bars connected at their outer ends to support the cover 31 and switch 30. The bulb 29 may be of the bimetallic type to produce an intermittent flash. The head 23 may be mounted on a forked bracket 26.